ENSO与北半球冬季大气环流异常的年代际关系
投稿时间:2006-01-14  修订日期:2006-04-24  点此下载全文
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作者单位
曹艳艳 南京信息工程大学, 江苏省气象灾害重点实验室, 江苏, 南京, 210044
宁波市气象局, 浙江, 宁波, 315012 
郭品文 南京信息工程大学, 江苏省气象灾害重点实验室, 江苏, 南京, 210044 
王群 盐城市气象局, 江苏, 盐城, 224001 
基金项目:江苏省高校自然科学研究计划项目(05KJB170072)
中文摘要:利用NCEP/NCAR再分析资料和CPC(气候预测中心)Nino3-4区海表温度序列,研究了1950/1951—2002/2003年冬季ENSO事件与北半球大气环流的相互关系及其年代际变化。结果表明:北半球大气环流对ENSO事件的响应在1978/1979年有一个明显的跃变。跃变后,低纬中高层大气环流对ENSO事件的响应明显减弱,其中东南亚的减弱最为明显,而低层大气环流对ENSO事件的响应则有所增强;东半球中高纬大气环流异常与ENSO事件关系明显减弱;西半球中高纬大气环流与ENSO事件的关系加强。
中文关键词:ENSO  冬季大气环流  年代际变化
 
Interdecadal Variation of Relationship between ENSO and Northern Winter Atmospheric Circulation Anomalies
Abstract:Using the NCEP/NCAR reanalysis data and the CPC(Clinate Prediction Center) SST data of the Nino3-4 region in 1950—2003,the relation and its interdecadal variation of the ENSO and the Northern Hemispheric atmospheric circulation in winter are studied.Results show:1)the response of the Northern Hemispheric atmospheric circulation to ENSO abruptly changed in the winter of 1978/1979;2)after the abrupt change,the association between ENSO and the middle-upper level atmospheric circulation over the low latitudes has been weakened,especially over the Southeast Asia,while that with the lower-level circulation enhanced;3)the atmospheric circulation in the Eastern Hemisphere has been less affected by ENSO than before,while that in the Western Hemisphere more intensively affected.
keywords:ENSO  winter atmospheric circulation  interdecadal variation
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